Harrow tooth



Patented June 17, 1930 UNITED STATES PATENT OFFICE I SAMUEL c. LEMMONS, F CEDAR HILL, TENNESSEE, ASSIGNOR or JAMES L. SPARKS, 0F RUssEL vILLE, KENTUCKY minnow TOOTH Application filed July 9, 1929, sr ai no. 376,902. 7

This invention relates to new and useful construction in harrow teeth and has for its primary object the provision of an improved harrow tooth which is formed of a single strand of material so formed as to provide integral with the tooth an improved frame gripping portion, the construction being such as to permit the tooth to be tightly held in position upon the frame.

Another very important object of this 1nvention is to provide a tooth for harrows which is simple in construction, strong, durable, can be readily and easily attached or detached from the tooth supporting frame of the harrow, economical, practical, reliable, thoroughly efficient and positive in operation, and otherwise well adapted for the purpose designed.

Other objects and advantages of the invention will become apparent during the study of the following description taken in connection with the accompanying drawings, wherein:

Figure l is a side elevation of my improved harrow tooth showing the same associated with the tooth supporting frame of the harrow, the toothed supporting frame being shown fragmentarily.

Figure 2 is a perspective view of the tooth per se.

With reference more in detail to the drawings, it will be seen that I have herein shown for the purpose of fully illustrating the application and purpose of this lnvention, a fragmentary portion of the tooth supporting frameof a harrow. The portion of the frame so fragmentarily shown is designated by the reference character 5. The teeth forming the essence of this invention are designated generallybythe reference character 6. The tooth as formed and as herein illustrated is made from a single strand of wire or other strong and suitable and durable material, the ends of the material being offset to terminate in a downwardly and forwardly extending penetrating portion 7. As shown the penetrating portion 7 is preferably of diamond shaped configuration and the material forming the tooth is continued rearwardly so that the penetrating portions 7 provide an elongated shank'8. At its upper end the shank is somewhat offset as at 9 and the material forming the shankof said portion is looped to provide an eye 10. Continuing from the loop or eye 10 and laterally extending'at 11, th-eextended portion 11 being curved intermediate its ends as'at 12, and said curved laterally extending portion 11 terminates in a vertically extending portion 13, which latter portion 13 at its upper extremity is laterally extended inwardly as at 14, said portion 14 being extended in a direction substantially at right anglesto the shank 8 of the tooth; I

s As shown in Figure 1, in securing the tooth 6 tothe toothed supporting frame 5 of the harrow, the loop, or eye 10 formed at the up -l per end ofthe shank'8 is disposedagainst one side face of the'frame 5, and a bolt 15 is passed through'the eye 10 and the frame 5, said bolt on its opposite ends being provided with a locking nut 16, threaded thereupon. The jlaterally extending curved portion 11 will extend transversely of the framebar 5, across the under or lower face of the frameso as to permit the vertically extending portion 13 to extend in substantial parallelism to the frame 5, across that face ofthe frame'opposite to which the eye 10 is disposed, the laterally extending extremity 14 of the extension 13 engaging with the frame 5, at the top face of said frame, so that said frame is gripped between the extension 14 and the extension 11,

and also between the eye portion 10 and the vertically-extending portion 13. Obviously then, the extension 13 and its lateral project ing extremity 14 defines what may be designated generally as at 18 a frame engaging hook for the shank portion 8 of the tooth.

From the foregoing then, it will be seen that I have provided an improved tooth structure for harrows, wherein the tooth structure embodies as an integral part of its construction means for attaching the tooth securely and rigidly to the tooth supporting frame ofthe harrow, and the means formed on the tooth for engaging the tooth supporting bar of the harrow being of such construction as to securely grip the frame soas to maintain the tooth thereon in a rigid engagement with the result that in the event that the harrow was lifted and dragged backward, the possioNE- ALr mo said frame, said. extended portion terminatbility of the tooth becoming disengaged from the frame 5 of the harrow is greatly lessened due to theprovision of the substantiallyhooklike portion 18 of the tooth which tightly grips or engages the frame which has been before described in detail.

Even though I have herein shown and described the preferred embodiment of my invention, it is to beunderstood that the same is susceptible to changes fully comprehended by the spirit of the invention and the scope of the appended claims.

WVhat is claimed is;

1. In a tooth for harrows, wherein the tooth comprises a shank, said shank being formed at one end with a penetrating point, said shank at its opposite end terminating in a loop adapted to be disposed against one face of the tooth supporting frame of the harrow, said shank being provided adjacent its upper end with a substantially right angularly disposed hook portion adapted to engage the tooth supporting frame of the harrow at the opposite side of the harrow frame for clamping said frame between the looped extremity of the shank and said hook.

2. In a harrow tooth of the class described, a shank, one end of the shank terminating in a penetrating point, said shank at its opposite end being provided with a looped extension adapted to be disposed at one face of the harrow frame, the material forming the shank adjacent said looped extremity adapted to be extended transversely of the harrow. frame in engagement with the under face of ing in a Vertically extending hook adapted to extend from the opposite face of the frame for hooking engagement vwith the upper face of the frame. y

In testimony whereof I aifix my signature.

SAMUEL o. LEMMONS. 

